Chair frame



FIG. 1 is a front elevational view of a chair frame, showing my new design;

FIG. 2 is a rear elevational view;

FIG. 3 is a cross sectional view along the lines A--A of FIG. 1;

FIG. 4 is a top plan view;

FIG. 5 is a bottom plan view;

FIG. 6 is a right side elevational view; and

FIG. 7 is a perspective view, the broken lines being for illustrative purposes only.

As left and right side views are symmetrical, the left side view has been omitted. 

The ornamental design for a chair frame, as shown and described. 